Full Stack Developer

About CHAAMO

CHAAMO is a next-generation trading card marketplace built for collectors. Our platform empowers users to buy, sell, trade, track, and showcase their collections, supported by real-time pricing tools, auctions, portfolio management, and a community-driven ecosystem.

We are entering our next phase of growth and are expanding our core development team, with a strong focus on strengthening our backend systems, data accuracy, and platform scalability.

Role Overview

We are seeking an experienced Full Stack Developer (Backend-Focused) to join the CHAAMO team.

This role will be heavily backend-driven, with responsibility for developing and optimising the core systems that power our platform, including data processing, integrations, analytics, and infrastructure.

You will also support frontend development where needed, but the primary focus is building a robust, scalable, and high-performance backend.

This role requires strong technical ability, reliable communication, and the capacity to collaborate and work independently in a fast-paced start-up environment.

Key Responsibilities Backend (Primary Focus)

Design, build, and optimise backend systems that power CHAAMO’s core features, including pricing, matching logic, marketplace functionality, and user data.
Develop and maintain APIs and complex data structures to support app functionality.
Build and enhance analytics and reporting systems (user tracking, revenue, VAT/OSS, marketplace metrics).
Manage and improve integrations including PayPal, Sendcloud, and other third-party services.
Work closely with external providers (shipping, payments, data services) to ensure stable and scalable integrations.
Improve performance, reliability, and scalability of backend infrastructure.
Support and refine data pipelines, and matching systems to improve pricing accuracy.
Admin Panel & Systems

Expand and maintain the CHAAMO Admin Panel, including dashboards, reporting tools, marketplace controls, and community management features.
Frontend (Secondary)

Support development and enhancement of features within the React Native mobile application when required.
Ensure smooth interaction between frontend and backend systems.
General

Collaborate with design, product, and leadership to turn concepts into scalable features.
Manage release cycles and deployments (iOS & Android).
Provide clear timelines, updates, and communication across all workstreams.
Participate in code reviews and contribute to best practices.
Required Skills and Experience

Strong backend development experience (critical requirement).
Proficiency in Python, Node.js, or similar backend technologies.
Solid experience working with databases (e.g., PostgreSQL, Supabase) and data architecture.
Strong knowledge of APIs, system design, and data processing.
Experience building backend systems for marketplaces, analytics platforms, or data-heavy applications.
Experience managing integrations such as PayPal, Stripe, Sendcloud, or similar services.
Working knowledge of React Native / frontend development (secondary requirement).
Strong problem-solving, debugging, and optimisation skills.
Ability to work independently and meet deadlines in a startup environment.
Fluent in English with strong communication skills.
Nice-to-Have

Experience with trading card platforms, marketplaces, or auction systems.
Experience with matching logic, or pricing engines.
Experience with shipping integrations and payment workflows.
UI/UX understanding.
What We Offer

Opportunity to join a rapidly growing marketplace reshaping the trading card industry.
A chance to work directly with highly driven founders and a skilled team.
Flexible working hours and a collaborative remote environment.
Equity/share options, with a salary introduced once the company reaches stable cash flow.
Long-term growth and leadership opportunities.